Fixed incorrectly unprefixed constant names in the OpenNI tutorial.
Fixed incorrectly unprefixed constant names in the OpenNI tutorial.

Bug report: http://code.opencv.org/issues/3329

opencv/opencv,opencv/opencv,apavlenko/opencv,apavlenko/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,opencv/opencv,apavlenko/opencv,apavlenko/opencv,apavlenko/opencv,opencv/opencv,apavlenko/opencv